1. serving as an introduction or preliminary to something more important; introductory
Usage: formal; literary
2. of or relating to a prelude; serving as a prelude
Usage: formal; literary

Examples

• The prelusory remarks by the speaker set the stage for the main presentation.
• The composer wrote a prelusory passage to introduce the symphony's central theme.
• These prelusory negotiations were meant to establish common ground before the formal talks began.
• The prelusory chapter of the novel provides essential background for understanding the plot.
• His prelusory comments hinted at the controversial topic he would address later.
• The prelusory music faded as the curtain rose on the first act.